Valve



A. w. CARLSON.

VALVE'.

APPLICATION FILED AUG.22. 1911.

Patented Feb. 28, 1922.

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@N bm im 'i -uaimm `UNITED STATES PATENT oi-Flcnv 'AXEL W. CARLSON", 0F WORCESTER, DASSACHUSETTS, ASSIGNOR TO COPPUS ENGI- NEERING .AND EQUIPMENT COMPANY, OF WORCESTER, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS.

To all whom may concern.' Y

Be it known that I, AXEL W. GARLsoN, a citizen ot the United States, residing at l/Vorcester, in the county of Worcester and Commonwealth oit Massachusetts, have invented a new and useful Improvement in a Valve, of which the following, taken in connection with the accompanying drawings, is a speciiication.

The present invention relates to valves, and has particular reference to a. device ot' this class adapted to regulate and proportion the flow of steam, water or the like, according to a predetermined mode of operation.

In the present embodiment ot my invention, l have illustrated the same in its application to a turbine operated tan blower, of the type adapted for the creation oi an artilicial dra t, to maintain, for instance, a pressure in the ash pit of a steam boiler furnace. It. is to be understood, however, that its use is not to be confined to the above orany other particular combination and arrangement of operating devices, except in so far as is determined by the Scope ot' the claims annexedk hereto.

The essential features ot my invention are fully set forth in the following description and illustrated inthe accompanying` drawings, in which y Fig. 1 is a view, partlyin vertical central section, of the apparatus embodying my invention.

Fig. 2 is a section on the line 2 2, Fig. 1.

Similar reference characters refer to similar parts in both figures.

Referring to the drawings, I have shown a steam turbine wheel 1, of ordinary construction, having blades 2 against which aV plurality of jets of steam are directed to impart rotation to said wheel, in the usual manner. The wheel 1 is carried upon a shaft 3 and is disposed within an inclosing casing 4:, which is supported, by means ot struts 5, from a casing 6, constituting a conduit for the air set in motion by a fan 7 mounted upon the other end of the shaft 3 and disposed near the mouth of said casing 6.

The construction and arrangement of the parts which form the journal bearings (for said shaft, and involve the exclusion of leaking steam or water from said journal bearings, form no part of the present invention,

Specification of Letters Patent.

v VALVE.

Patented Feb. 28, 1922.

Serial No. 187,729.

and hence a detailed description of the same is unnecessary. The present invention is concerned only with the means for controlling and C'iistributing, in the manner hereinafter set forth, the steam exhausted from the turbine casing A, y

The exhaust aperture of the casing 4 is preferably constituted by an elbow S, leading from the interior thereof in the direction of the open mouth of the casing 6. A short length of pipe 9 has a reduced nipple 10 which isentered in said elbow, and a similar pipe 11, opposite the pipe 9, has a nipple 12 which is threaded into the bore of a passage 13 formed in the wall of the casing and opening into the interior of said casing 6 at 14,contiguous to the fan 7. The discharge Votthe'tan 7 so that the movement of .the air through the conduit by said blower inthe direction ot the arrow a willinduce a current through the passage 18 in the direction of the arrow o, thereby diminishing the steam pressure upon the exhaust side of the wheel'l in the casing 41, and causing the exhaust steam to become thoroughly intermingled with the airset in motion by said fan.

The pipe 11 provides a stationary' diskor plate 15, having a series of equidistant seg'- mental apertures 16 therein, in the present instance tour in number. The said apertures 16 are disposed apart from each other at an'- gulardistances substantially equal to the angular extent oiE each aperture, for a purpose hereinafter set forth. A tubular inclosure 17 connects the pipes 9 and 11, as shown. in Fig. 1, being suitably secured thereto. A sleeve 1S having a turning fit within inclosure 17, is disposed therein between the ends of pipes 9and 11. Said sleeve is open at its end adjacent the elbow 8, and is formed at its end adjacent the plate 15 with a head 19, seating against Vsaid plate and having a series of segmental apertures 2O corresponding in number, size and arrangement to the apertures 16 of the plate 15. j

The inclosure 17, substantially midway ot its length, provides a lateral opening 21, to which is connected a pipe or conduit 22 leading to any apparatus designed to employ eX- haust steam, such, for instance, as a heating system, or the like. The sleeve 18 has a port 23 adapted to register with the opening 21 when said sleeve is turned intola position in which the apertures 20 are carried out of alinement with the apertures 16, as hereinafter set forth. The sleeve `18 supports an interior web 24, 15o-which is secured a stem 25, passing through a stuffing box 26 inthe casing AI, and having on its outside end a rectangular head 27, or the like, to facilitate `its engagement bya wrench when the angular position of the sleeve 18 is to beadjusted. The plate 15 and the head 19 are held in close contact lby the endsof pipes 9 and 11, which permit free rotation ofsaid head .With respect to Vsaid plate, but serves to Vprevent axialmovement of said parts and the conscquent leakage of steam `bet-Ween their contaeting surfaces.

In the operation of my improved mechanism, the disposition of Jthe sleeve 18, Whereinthefapertures 20i of the head 19 ylie in register With theapertures 16.01 plate `15,thereby affording a free passage `of the exhaust steam to thecasing 6, involves a `disposition of `the port 23 just removed from overlapping relation to the opening 21of the inclosure 17. As the sleeve is turned from the position above described, :the port area available for the passage of steam to the casing 6 is diminished, While the amount ofoverlap between the port 23 and opening 21is correspondingly increased, permitt'ng a portion of the steam to pass through the pipe 22 to the ,devices at the other end thereof. The invention, therefore, provides a means whereby the flouv of exhaust steam from the turbine to the blower conduit may be controllechas desired, and may be entirely out on" if, for any reason, the commingling of such steam with the air flowing throughthe conduit becomes objectionable. At ythe sametime,and notwithstanding the throttling of the normal steam passa-ge to the casing 6, the construction insures against the `building up of a back pressure calculated `to interfere with the operation of the turbine Wheel, since the opening 21 rendered available in increasing proportion as the plate openings 16 are throttled, ail'ords a free exit of the steam from the sleeve 18. y

The previously `mentioned arrangement and proportioning of theapertures `16 and 20, wherein the angular distance between such apertures is madeto correspond substantially to the angular extent of each aperture, affords the maximum port area through the plate 15A and head 19, Vwhich can be completely opened and eompletelyclosed b vrelative movement between said plate and head, as will be clearly apparent.

In order to coniine the movement of sleeve 18 Within the pro-per limits, a stop 29 may beprovided, for coaetion With the opposite edges of opening ,21, :to prevent the port 23 from Vbeing turned beyond 4its above deviding a passage for the ber having one endcopen' and carryingat the Other end a plate having a series of openings, of a second tubular member telescoped Within .said rst tubular member `and profloW of pressure fluid, said second imember having an end closure in contact with said plate, with a series of openings therein corresponding vto .the openings of said plate, Vmeans for causing `relative rotation between said members to bring said series of openings into'and out of register, and means provided in said tubular members for discharging pressure fluid from said passage when said openings are out of registration.

2. The combination with a tubular Vmember, of a second tubular membertelescoped Within theiirst tubular member, and having alongitudinal passage for the flow of a pressure.fluidmedium and a-'lateral port for the discharge of the fluid pressure medium, a valve mechanism for closing said longitudinal passage having an openingtherethrough equivalentto theopening of said lateral port, and-means for the simultaneous openingand closing of said valve mechanism and of said lateral port, whereby a uniform eifective area for the discharge of the pressure fluid medium from said second tubular member is maintained.

2l. The combination With a tubularmember havinga'side opening, ofa stationary plate extending diametrically i across said tubular member and having an aperture for the passage. of .a iiuid pressure medium therethrough, a rotatable sleeve having a side opening journalled in said tubularmember and provided with an apertured plate extending `diametrically across said sleeve in contact With said'stationary plate,and means for rotating said sleeve to divert themovement of the pressure. medium through the side opening of said tubular member.

1. The combination `Withfa tubular member having a `longitudinal passage `therethrough of a fluid pressure medium, saidtubular member having a side passage, ofja sleeve journalled in .said tubular member provided with an aperture corresponding Withthe side passage of said tubular member,means for `rotatingsaid sleeve to open and close said side passage, and means carried by said sleeve for closing the longitudinal passage through said tubular memberas said side passageis opened. V

Dated this 111th `day of August 1917.

AXELNV. CARLSON. .llVitnesses VERA L. Woon, M. P. Po'r'rs. 

